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  GBase8s存储过程游标传递（指针传递）外用
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  <h3 id="表"><a href="#表" class="headerlink" title="表"></a>表</h3><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">create</span> <span class="keyword">table</span> &quot;gbasedbt&quot;.tab1</span><br><span class="line">(</span><br><span class="line">    c1 <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    c2 <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    c3 <span class="type">varchar</span>(<span class="number">255</span>)</span><br><span class="line">) extent size <span class="number">16</span> next size <span class="number">32</span> lock mode <span class="type">row</span>;</span><br><span class="line"><span class="keyword">revoke</span> <span class="keyword">all</span> <span class="keyword">on</span> &quot;gbasedbt&quot;.tab1 <span class="keyword">from</span> &quot;public&quot; <span class="keyword">as</span> &quot;gbasedbt&quot;;</span><br><span class="line"></span><br><span class="line"><span class="keyword">create</span> <span class="keyword">table</span> &quot;gbasedbt&quot;.tab2</span><br><span class="line">(</span><br><span class="line">    b1 <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    b2 <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    b3 <span class="type">varchar</span>(<span class="number">255</span>)</span><br><span class="line">) extent size <span class="number">16</span> next size <span class="number">32</span> lock mode <span class="type">row</span>;</span><br><span class="line"><span class="keyword">revoke</span> <span class="keyword">all</span> <span class="keyword">on</span> &quot;gbasedbt&quot;.tab2 <span class="keyword">from</span> &quot;public&quot; <span class="keyword">as</span> &quot;gbasedbt&quot;;</span><br></pre></td></tr></table></figure>




<h3 id="指针传递"><a href="#指针传递" class="headerlink" title="指针传递"></a>指针传递</h3><pre><code>下面两个存储过程合在一起的作用，就是指针传递。在一个存储存储过程中赋值的游标，在其他地方页可以loop遍历。
</code></pre>
<h3 id="存储过程：p01"><a href="#存储过程：p01" class="headerlink" title="存储过程：p01"></a>存储过程：p01</h3><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">--      3个值1个游标入参，（1个游标即一个指针）</span></span><br><span class="line"><span class="comment">--      这个过程的作用：给游标赋值</span></span><br><span class="line"><span class="keyword">create</span> <span class="keyword">procedure</span> &quot;gbasedbt&quot;.p01(</span><br><span class="line">    c1   <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    c2   <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    c3   <span class="type">varchar</span>(<span class="number">255</span>),</span><br><span class="line">    <span class="keyword">Out</span>  o4  SYS_REFCURSOR)</span><br><span class="line">    <span class="keyword">define</span> str <span class="type">varchar</span>(<span class="number">255</span>);</span><br><span class="line">    let str<span class="operator">=</span><span class="string">&#x27;&#x27;</span>;</span><br><span class="line">    <span class="keyword">Open</span> o4 <span class="keyword">For</span> &quot;Select c1 From tab1 t Where t.c1 = ? And t.c2 = ? And t.c3 = ?&quot; <span class="keyword">using</span> c1,c2,c3;</span><br><span class="line">    <span class="comment">--loop</span></span><br><span class="line">    <span class="comment">--    fetch o4 into str;</span></span><br><span class="line">    <span class="comment">--    exit when SQLCODE == 100;</span></span><br><span class="line">    <span class="comment">--    insert into tab2(b2) values(str);</span></span><br><span class="line">    <span class="comment">--end loop;</span></span><br><span class="line"><span class="keyword">end</span> <span class="keyword">procedure</span></span><br><span class="line">;</span><br><span class="line"></span><br></pre></td></tr></table></figure>

<h3 id="存储过程：test"><a href="#存储过程：test" class="headerlink" title="存储过程：test"></a>存储过程：test</h3><p>–      这个过程的作用：调用其他存储过程，获取游标，并遍历游标。</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">create</span> <span class="keyword">procedure</span> &quot;gbasedbt&quot;.test()</span><br><span class="line">    <span class="keyword">define</span> out4 SYS_REFCURSOR;</span><br><span class="line">    <span class="keyword">define</span> str <span class="type">varchar</span>(<span class="number">255</span>);</span><br><span class="line">    <span class="keyword">SET</span> DEBUG FILE <span class="keyword">TO</span> <span class="string">&#x27;/tmp/test3.trace&#x27;</span>;</span><br><span class="line">        TRACE <span class="keyword">ON</span>;</span><br><span class="line">    let  out4<span class="operator">=</span> <span class="keyword">null</span>;</span><br><span class="line">    <span class="keyword">begin</span></span><br><span class="line">        <span class="keyword">call</span> p01(<span class="string">&#x27;aaa&#x27;</span>,<span class="string">&#x27;bbb&#x27;</span>,<span class="string">&#x27;ccc&#x27;</span>,out4);</span><br><span class="line">    <span class="keyword">END</span></span><br><span class="line">    let str <span class="operator">=</span><span class="string">&#x27;&#x27;</span>;</span><br><span class="line">    loop</span><br><span class="line">        <span class="keyword">fetch</span> out4 <span class="keyword">into</span> str;</span><br><span class="line">        exit <span class="keyword">when</span> SQLCODE <span class="operator">=</span><span class="operator">=</span> <span class="number">100</span>;</span><br><span class="line">        <span class="keyword">insert</span> <span class="keyword">into</span> tab2(b3) <span class="keyword">values</span>(str);</span><br><span class="line">    <span class="keyword">end</span> loop;</span><br><span class="line"><span class="keyword">end</span> <span class="keyword">procedure</span></span><br><span class="line">;</span><br></pre></td></tr></table></figure>

<h3 id="映射xml文件"><a href="#映射xml文件" class="headerlink" title="映射xml文件"></a>映射xml文件</h3><p>D:\soft\src\Java\demoSpringBootMybatisDruid\src\main\resources\mybatis\mapper\ProcedureTest.xml</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version=<span class="string">&quot;1.0&quot;</span> encoding=<span class="string">&quot;UTF-8&quot;</span> ?&gt;</span></span><br><span class="line"><span class="meta">&lt;!DOCTYPE <span class="keyword">mapper</span></span></span><br><span class="line"><span class="meta">        <span class="keyword">PUBLIC</span> <span class="string">&quot;-//mybatis.org//DTD Mapper 3.0//EN&quot;</span></span></span><br><span class="line"><span class="meta">        <span class="string">&quot;http://mybatis.org/dtd/mybatis-3-mapper.dtd&quot;</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">mapper</span> <span class="attr">namespace</span>=<span class="string">&quot;com.trey.mapper.ProcedureTestMapper&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">select</span> <span class="attr">id</span>=<span class="string">&quot;exeProcedure&quot;</span> <span class="attr">resultType</span>=<span class="string">&quot;Test&quot;</span>&gt;</span></span><br><span class="line">        call test();</span><br><span class="line">    <span class="tag">&lt;/<span class="name">select</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">mapper</span>&gt;</span></span><br></pre></td></tr></table></figure>

<h3 id="映射"><a href="#映射" class="headerlink" title="映射"></a>映射</h3><p>D:\soft\src\Java\demoSpringBootMybatisDruid\src\main\java\com\trey\mapper\ProcedureTestMapper.java</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.trey.mapper;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.trey.pojo.Test;</span><br><span class="line"><span class="keyword">import</span> org.apache.ibatis.annotations.Mapper;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Repository;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="meta">@Mapper</span></span><br><span class="line"><span class="meta">@Repository</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">interface</span> <span class="title class_">ProcedureTestMapper</span> &#123;</span><br><span class="line">    List&lt;Test&gt; <span class="title function_">exeProcedure</span><span class="params">()</span>;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h3 id="控制器（路由）"><a href="#控制器（路由）" class="headerlink" title="控制器（路由）"></a>控制器（路由）</h3><p>D:\soft\src\Java\demoSpringBootMybatisDruid\src\main\java\com\trey\controller\ProcedureTest.java</p>
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.trey.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.trey.mapper.ProcedureTestMapper;</span><br><span class="line"><span class="keyword">import</span> com.trey.pojo.Test;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RestController;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="meta">@RestController</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">ProcedureTest</span> &#123;</span><br><span class="line">    <span class="meta">@Autowired</span></span><br><span class="line">    <span class="keyword">private</span> ProcedureTestMapper procedureTestMapper;</span><br><span class="line"></span><br><span class="line">    <span class="meta">@GetMapping(&quot;/exeProcedure&quot;)</span></span><br><span class="line">    <span class="keyword">public</span> List&lt;Test&gt; <span class="title function_">exeProcedure</span><span class="params">()</span>&#123;</span><br><span class="line">        <span class="keyword">return</span> procedureTestMapper.exeProcedure();</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure> 
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